Good parasites do exist, but they aren’t always very obvious! The nicest parasites are the fungi which you can eat, like mushrooms or food and drinks made using yeast, like bread and soy sauce. Some fungi are also used in medicine, as antibiotics. Other parasites are used in medicine but they are a little yuckier! Leeches and maggots are grown in special laboratories and are used to keep blood flowing or clean up dead tissue after people have had accidents!

Do you want to learn how doctors use leeches and maggots? Click on the link to Find Out More!